MegEngine/dnn/src/common/tile_repeat_helper.h

/**
 * \file dnn/src/common/tile_repeat_helper.h
 * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
 *
 * Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 */
#pragma once
#include <cstddef>

namespace megdnn {

// Tile (m, n) to (m, n*times) or Repeat (m, n) to (m*times, n)
template <typename T>
void tile_or_repeat_single_axis(
        const T* __restrict src, T* __restrict dst, const size_t m, const size_t n,
        const size_t times);
// forward and backward can share the same init/update functions.
template <typename T>
void init_tile_repeat_state(
        const T* src, T* dst, T* workspace0, T* workspace1, T*& current, T*& next,
        size_t& state, size_t nr_reduces);
template <typename T>
void update_tile_repeat_state(
        const T* src, T* dst, T* workspace0, T* workspace1, T*& current, T*& next,
        size_t& state, size_t nr_reduces);

}  // namespace megdnn

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